Pump



Aug.. 15, 1944. J, E STEVE-Ns 4 2,355,928 PUMP Filed Nov. 2:5, 1942 T; yI 3//3 Byjwm Arroz/vir Patented Aug. 15, 1944 UNITED STATES PATENTOFFICE PUMP John E. Stevens, New York, N. Y. Application November 23,1942,ser`ia1`No. 466,625

11 claims. (o1. 10s-72) This invention relates to pumps, and aims toprovide a novel pump structure whereby a practical and efficient pumpmay be made which is extremely simple in construction and operation. Thegeneral principle of the invention is the utilization of a notched orcogged belt trained about a pair of rollers, drums, pulleys, or the likeof unequal size, so that when the teeth of the belt pass around thesmaller roller the water caught between successive rows of teeth issqueezed out. The belt may be made of any suitable exible material orcombination of materials, of which rubber may be cited as one eX- ample.

The above and other objects will become apparent in the descriptionbelow, wherein characters of reference refer to like-numbered parts inthe accompanying drawing which forms a part hereof. It is particularlyto be noted that the drawing is intended to serve the purpose ofillustration only and that it is neither intended nor desired to limitthe invention necessarily to the specific details of construction shownin the drawing, excepting insofar as such details may be incorporated inthe appended claims.V

Referring briefly to the drawing,

Figure 1 is a longitudinal cross-sectional elevational view of the pump.

Figure 2 is a cross-sectional View taken onl the line 2-2 of Figure 1.

Figure 3 is a cross-sectional View taken on the line 3-3 of Figure l.

Figure 4 is a cross-sectional view taken on the line 4 4 of Figure 1.

Referring in detail to the drawing, the numeral I shows the pumphousing, which comprises essentially a shell II enclosing one side, thetop and bottom of the pump, and a panel or cover l2 secured against theperiphery of the shell II, by any suitable 4means such as, for instance,the' screw bolts I3. A supporting base or pedesta i1 is integral withthe shell II. i

A shaft I4 is supported in bearings supported in the shell Hand panelI2, respectively, and has keyed thereon a pulley or` wheel I5.- One endof the shaft i4 extends through an opening in the panel I2 to theoutside thereof so that it maybe driven by any suitable means such as,for instance, a motor or a crank handle, not shown. An inlet opening I6is provided through the side wall of the shell II and is positioned,below the shaft I 4, as shown.

As is seen in Figure 1, that end of the pump housing in which the shaftI4 and roller` I5 are mounted, is of greater height than the other end.

Against the inside of the side wall of the shell Il, at the reduced endof the housing I0, a member I8 is mounted. In outer conformation thismember is of the same curvature as the curved shell at that end so thatit registers snugly within the shell. The member comprises a base orplate portion i9 which lies flush against the shell side wall. Extendingfrom this plate I9 is an outer wall 20. Also extending from the plate I9is a block portion 2l, whose converging side walls 22 are parallel withthe inner side walls 23 of the wall 20. The reduced end of the block 2|is gouged out to provide a cylindrical surface 24. A @over plate 25 isadapted to be screwed against the member I8. This plate 25 and the baseplate I9 have opposed openings 26 inwhch pins or spindles 21 of a roller28 register rotatably, the surfaceof the roller registering rotatablywithin the cylindrical gouge 24 of the block 2 I. With the roller 28thus positioned,A it is apparent that a channel 29 of constant depth andwidth is formed within the member I8 and .covered by the plate 25, theinlet to this channel being taken at the point 30 and the outlet at 3l.f

A belt 32 is trained about the .wheel I5 and the roller 28. On its innerside, the belt 32 is provided with spaced kteeth or cogs 33, and thebelt is made of flexible material of any suitable kind such as, forinstance, rubber. An outlet opening 34 is provided throughthe plate I9and shell II adjacent the lower periphery of the roller 28, and a nipple35 extends therefrom.

The operation of the pump is as follows. With the type of pumpillustrated, a hose may be attached to the inlet nipple 36 of the inletI6 and the open end of the hose, not shown,l placed into the water to bepumped.V The shaft I4 is then rotated by any suitable means, not shown,in a clockwise direction (Figure 1). As the belt then travels in itspath, it is to be noted that the teeth 33 thereof are brought togetheras soon as they begin to pass about the reduced roller 28, and the airwhich is thus squeezed out of that space is forced out through theoutlet 34; thus fills the raceway, the leakage can be maintained.

at a minimum.

'I'his pump has a wide eld of applications and it can be built for handor motor power. By mounting it in such position that the larger end isset into the water with the reduced end positioned thereabove out of thewater, it is obvious] that it would function efiiciently as a deep wellpump by simply elongating the housing and using a long belt. Obviously,modifications in form and structure may be made without departing fromthe spirit and scope of the invention.

As a means to tend to guide the water Within the housing toward the beltand into the spaces between the teethv33, a deflector 3T is provided.This comprises simply an angle-shaped sheet of any suitable materialsecured to the outer wall of tn efblockY 2| just above the inlet 3U to'the channel o'rraceway 29. This isespecially useful when the belt istraveling at high speed and isconsequently agitating the water withinthe housing.V

`Itv is further to be noted that the device could function Vwitlnbothroller and pulley of the same diameter, although in that ca'se it wouldnot be as efficient nor, probably, as practical as in the caseillustrated. `I'claimg o 1. 'A pump. comprising a housing having a,rotatableshaft provided with a pulley rigid thereon and'mcunted'in oneend of said housing, a roller mounted in the other end of said housing,a belt of flexible material trained about said roller and pulley andhavingV longitudinally spaced teeth on the'inner surface thereof, acasing secured to said housing `and surrounding said roller, said casinghaving a belt racewayrformed therein of the same depth and width as saidbelt, said housing having an inlet opening Vadjacent saidpulleyand anoutlet opening'adjacent said roller, l

2,. Apuinpcomprising a housing having a ro` tatable shaft provided witha pulley rigid thereon in one endrthereof and a roller mounted in theother'4` endA of the housing, the vdiameter of said roller being lessthan that' of said pulley, a belt of flexible material trained aboutsaid roller and pulley and having longitudinally spaced teeth on the inneosurface thereof, a member-secured toV said housing aroundA saidroller and having a belt raceway extending i therethrough, said race'waybeing of the same depth and width as said belt, said' member and 'saidbelt registering in said raceway sealing the pulley side of said housingfro'mthe roller 'side thereof', said housing having an yinlet openingtherethrough adjacent said pulley and anV outlet opening therethroughadjacent said roller.

' V31A Vpump comprising a'housing having a rotatable pulley in one endanda roller in the other,

a belt of nexible material trained about saidA rollerandpulley. and.having spaced projectionsV onfthe .inner sidethereof, said housinghaving an inletl adjacent said pulley. and .an .outlet adjacent said.roller, and sealing meansibetween said roller andrpulley, aix.; f 1.

nf1. -A;pump comprising. .a housing having' a pulleyat one endandlvafroller at` the-:other end,

to actuate said pump.

5. A pump in accordance with claim 4, wherein one of said wall openingsis provided on the pulley side with a deflector consisting of anangleshaped member having one arm thereof extending angularly outwardtherefrom.

6; A pump in accordance with claim 4, wherein said teethare taperedtoward the free extremities "thereof,

7; Apump comprising a housing having a pair of spaced apart rotatablepulleys, a partition vdividing's'aid housing into two compartments, oneof said pulleys being positioned in each compartment, said partitionhaving a pair of spaced openings therethrough, a belt of flexiblematerial trained about said pulleys and having spaced teeth on vtheinner side thereof, said belt passing through said openings and being ofthe same cross-sectional dimensions. as said openings to seal saidopenings, `said housing having an inlet opening into one of saidcompartments and an outlet opening into the other.

8. A pump comprising a housing having a rotatable pulley in one end anda roller in the other, said Yroller having a smaller diameter than saidpulleyja belt of flexible material trained about said roller and pulleyand having outwardly tapering Vspaced teeth on the inner side thereof,said housing having an inlet adjacent said pulley andan outlet adjacentsaid roller, and sealing means between said roller and pulley.

'9. A pump comprising a housing having a rotatable pulley in one end anda roller in the other, said roller having va smaller'diameter than saidpulley, a belt of flexible material trained about said roller and pulleyand having cog-like projections thereon extending laterally across saidbelt on the inner side of said belt, said housing having an'inletVadjacent said pulley and an outlet adjacent said roller, and sealingmeans between said roller and pulley.

10. A pump comprising a housing having a ro-Y tatable pulley in one endand a roller in the other, said roller having a smaller diameter thansaid pulley, a belt fof flexible material trained about said' roller andpulley and having laterally extending longitudinally spaced projectionson the inner side thereof, said housing having an inlet adjacent saidpulley and an outlet adjacent said roller, and sealing means betweensaid roller and pulley.

11.` Apump comprising a housing having a rotatable pulley in one end anda roller in the other, .a belt of flexible materialtrained about saidroller and'pulley and having spaced recesses onthe inner sidethereof,said yhousing having an inlet adjacent said pulley and an outletadjacent saidroller, .and sealingmeans between said roller and pulley.Yv

JOHN E. STEVENS.

